* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
#messages {
    list-style-type: none;
    margin: 0;
    padding: 0;
}
ul{
    z-index: 9999;
}
#messages li {
    padding: 5px 10px;
}

#messages li:nth-child(odd) {
    background: #eee;
}

body {
    margin: 0px;
    padding: 0px;
    font-family: "Segoe UI", "Microsoft Yahei", sans-serif;
}